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Chapter 5 Addition <br />Sample Problem <br />Existing Home <br />Glazing upgrade (three places)' <br />Existing glazing: 3.0' x 5.0' aluminum, <br />single pane windows <br />U-value = <br />Proposed replacement: 3.0' x5.0', vinyl, <br />double pane, Lo E. <br />U-.value = .32 <br />I Addition <br />I (s 750 Sq. f.) <br />I Assume that the Component <br />I Performance calculation yeUds: <br />BASE CASE' UA 167.1 <br />PROPOSED UA 199.3 <br />